Layout tool for multiple floor and roof joist in-line through hole drilling

ABSTRACT

A layout tool for multiple floor and roof joist in-line through drilling ( 1 A) having a laser mounting and vertical adjustment bracket ( 3 ) fastened with a pivot pin ( 10 ) to a horizontal adjustment bracket ( 4 ) with it fastened by a vertical pivot pin ( 5 ) to the clamping bracket ( 6 ) that has a threaded clamping tube welded to it. The laser mounting and vertical adjustment bracket ( 3 ) has two holes to accommodate upper laser ( 8 ) and lower laser ( 9 ) to be fastened in them. The laser mounting and vertical adjustment bracket ( 3 ) has a threaded hole to accommodate the vertical adjustment screw ( 1 ). By tuning the vertical adjustment screw left or right it pivots the laser mounting bracket ( 3 ) vertically up or down. The horizontal adjustment bracket ( 4 ) has a threaded hole to accommodate the horizontal adjustment screw ( 2 ). By turning the horizontal adjustment screw ( 2 ) left or right it pivots the laser mounting bracket ( 3 ) horizontally left or right. The clamp bracket ( 6 ) and threaded clamping tube ( 7 ) are securely clamped to floor joist ( 14 ) with the clamp washer ( 12 ) and the clamp nut ( 13 ). The spacer block (11) is attached to the clamping bracket ( 6 ) to accommodate the shape of the TJI floor joist ( 14 ).

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] None submitted

STATEMENT REGARDING FEDERAL SPONSORED RESEARCH OR DEVELOPMENT

[0002] Not Applicable

REFERENCE TO MICROFICHE APPENDIX

[0003] None Submitted

BACKGROUND OF THE INVENTION

[0004] This method and apparatus is the result of the need for aneconomical and simple labor saving device for the installation of ridgeconduits and pipes that pass through multiple floor and/or roof joistsin new building construction. These pipes and conduits are for theconveyance of water, waste gas, fire sprinklers and electrical wires.The installation of these pipes and conduits require the drilling ofin-line holes to accommodate them. The Layout for these holes is timeconsuming and difficult especially when gravity fall waste lines requirea ¼″ drop per each foot of run. This device will accomplish this bymounting it in the known starting point of the pipe run and setting atarget at the end of the known pipe run (as the diagram shows on page7), if gravity fall is required, than a simple adjustment of thevertical adjustment screw will accomplish the angle needed.

[0005] With the use of the aiming laser, on the layout device, mountedat the start of the pipe run it can be adjusted, with the horizontal andvertical adjustment screws, to align with the target at the end of thepipe run. Then the drilling laser is turned on showing with the laserbeam where the second joist is to be drilled. Each time the joist isdrilled the laser will shine through the drilled hole to show where thenext joist is to be drilled until the target is reached or beyond ifneeded.

[0006] The present two methods are to either measure each joist off aperpendicular wall for the horizontal location of the required hole andmeasure up from the bottom of each joist to locate the vertical positionof the required hole. When the holes require a vertical gravity drop foreach foot of run this is more difficult and time consuming. Or the othermethod is to stretch a layout line from the start of the known pipe runto the end of the known pipe run and measured up from the bottom of eachjoist to locate the vertical position of the required holes. When theholes require a vertical gravity drop for each foot of run this again ismore difficult and time consuming.

BRIEF DESCRIPTION OF THE DRAWINGS

[0007]FIG. 1 Is a side view of the layout tool.

[0008]FIG. 1A Is a expanded assembly drawing of the layout tool.

[0009]FIG. 2 Is a side view showing the layout tool mounted to a TJIfloor joist.

[0010]FIG. 3 Is a top view showing the layout tool mounted to a TJIfloor joist.

[0011]FIG. 4 Is a drawing showing how to use the layout tool.

LIST OF REFERENCE NUMERALS UTILIZED IN THE DRAWINGS

[0012]1—Vertical adjusting screw

[0013]1A—Layout Tool

[0014]2—Horizontal adjusting screw

[0015]3—Laser mounting bar/vertical adjustment bracket

[0016]4—Horizontal adjustment bracket

[0017]5—Horizontal adjustment pivot pin

[0018]6—Clamping bracket

[0019]7—Threaded clamping tube

[0020]8—Upper “where to drill” laser

[0021]9—Lower “aiming” laser

[0022]10—Vertical pivot pin

[0023]11—Spacer block

[0024]12—Clamp washer

[0025]13—Clamp nut

[0026]14—TJI Floor joist

[0027]15—Aiming target

[0028]16—Sub-flooring

[0029]17—Lower aiming laser beam (level)

[0030]18—Lower aiming laser beam (¼″ fall to the foot)

[0031]19—Upper drill laser beam (level)

[0032]1—VERTICAL ADJUSTING SCREW

[0033]2—HORIZONTAL ADJUSTING SCREW

[0034]3—LASER MOUNT/VERTICAL ADJ. BRACKET

[0035]4—HORIZONTAL ADJ. BRACKET

[0036]5—HORIZONTAL ADJ PIVOT PIN

[0037]6—CLAMPING BRACKET

[0038]7—THREADED CLAMPING TUBE

[0039]8—DRILL HOLE SPOTTING LASER

[0040]9—AIMING LASER

[0041]10—VERTICAL PIVOT PIN

[0042]11—SPACER BLOCK

[0043]12—CLAMP WASHER

[0044]13—CLAMP NUT

[0045]14—FLOOR JOIST

[0046]15—AIMING TARGET

[0047]16—SUB-FLOORING

[0048]17—AIMING LASER BEAM (LEVEL)

[0049]18—AIMING LASER BEAM (¼′ TO THE FOOT FALL)

[0050]19—DRILLING LASER BEAM (LEVEL)

[0051]20—DRILLING LASER BEAM (¼′ TO THE FOOT FALL)

[0052]21—DRILLING LASER BEAM (90 DEGREES TO JOIST)

[0053]22—CONCRETE FLOOR

[0054]23—2 X WOOD FRAMING

[0055]20—Upper drill laser beam (¼″ fall to the foot)

[0056]21—Upper drill laser beam (90 degrees to the joist)

[0057]22—Concrete floor

[0058]23—2 X wood framing

LIST OF REFERENCE LETTERS UTILIZED IN THE DRAWINGS

[0059] A—Drill hole where 1^(st) hole is needed and mount layout tool.

[0060] B—Hang target where last hole is needed.

[0061] C—Turn on lower aim laser.

[0062] D—Adjust lower aim laser to the aim target.

[0063] E—Turn on upper drill laser.

[0064] F—Drill hole in the joist where the laser beam indicates.

[0065] G—Upper drill laser beam now emits through the new hole to thenext joist to be drilled, etc. etc.

1. The design and/or use of the Floor and Roof Joist layout apparatus'offset aiming technique to accommodate an assembly of joists.
 2. Thedesign and/or use of the Floor and Roof Joist layout apparatus' clampingtube to be used to attach the apparatus to the joist.
 3. The designand/or use of the floor and Roof Joist layout apparatus' clamp to behollow to allow the laser light to pass through it for the hole drillingoperation.
 4. The design and/or use of the Floor and Roof Joist layoutapparatus' hollow clamping tube to use the first hole of the pipe runfor mounting the layout apparatus.